2Pulling Keys
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Pulling keys is a core skill for artists compositing visual effects. For bluescreen and greenscreen shots we have excellent keyers such as Keylight and Primatte, but we start here with a variety of ways of pulling keys in general – and save the keyers for the following chapter. There are two reasons for this. First, as you will see in the next chapter on keyers, we often have to pull “auxiliary keys” to assist the keyer, and we should have that information before tackling the keyers. Second, we frequently have to pull keys for non-greenscreen tasks. For both of these missions we will need an ...
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